Managing: Pure, If Not Simple

Read this article and think about Henry Mintzberg's view that management is a result of an individual's experience and the situation in which that person finds himself or herself. Do you agree with this view? Do you, or those around you, manage based on this approach, or do you/they use a more scientific and structured method? In your experience, which approach has proven to be more effective? How does Mintzberg's management approach complement or contrast with other theories?